USN-3335-1: Linux kernel vulnerabilities

Ubuntu Security Notice USN-3335-1

linux, linux-meta vulnerabilities

A security issue affects these releases of Ubuntu and its
derivatives:

Ubuntu 14.04 LTS

Summary

Several security issues were fixed in the Linux kernel.

Software description

linux
- Linux kernel

Details

It was discovered that the stack guard page for processes in the Linuxkernel was not sufficiently large enough to prevent overlapping with theheap. An attacker could leverage this with another vulnerability to executearbitrary code and gain administrative privileges (CVE-2017-1000364)

It was discovered that a use-after-free vulnerability in the core voltageregulator driver of the Linux kernel. A local attacker could use this tocause a denial of service or possibly execute arbitrary code.(CVE-2014-9940)

It was discovered that a buffer overflow existed in the trace subsystem inthe Linux kernel. A privileged local attacker could use this to executearbitrary code. (CVE-2017-0605)

Roee Hay discovered that the parallel port printer driver in the Linuxkernel did not properly bounds check passed arguments. A local attackerwith write access to the kernel command line arguments could use this toexecute arbitrary code. (CVE-2017-1000363)

Li Qiang discovered that an integer overflow vulnerability existed in theDirect Rendering Manager (DRM) driver for VMWare devices in the Linuxkernel. A local attacker could use this to cause a denial of service(system crash) or possibly execute arbitrary code. (CVE-2017-7294)

A double free bug was discovered in the IPv4 stack of the Linux kernel. Anattacker could use this to cause a denial of service (system crash).(CVE-2017-8890)

Andrey Konovalov discovered an IPv6 out-of-bounds read error in the Linuxkernel's IPv6 stack. A local attacker could cause a denial of service orpotentially other unspecified problems. (CVE-2017-9074)

Andrey Konovalov discovered a flaw in the handling of inheritance in theLinux kernel's IPv6 stack. A local user could exploit this issue to cause adenial of service or possibly other unspecified problems. (CVE-2017-9075)

It was discovered that dccp v6 in the Linux kernel mishandled inheritance.A local attacker could exploit this issue to cause a denial of service orpotentially other unspecified problems. (CVE-2017-9076)

It was discovered that the transmission control protocol (tcp) v6 in theLinux kernel mishandled inheritance. A local attacker could exploit thisissue to cause a denial of service or potentially other unspecifiedproblems. (CVE-2017-9077)

It was discovered that the IPv6 stack was doing over write consistencycheck after the data was actually overwritten. A local attacker couldexploit this flaw to cause a denial of service (system crash).(CVE-2017-9242)

Update instructions

The problem can be corrected by updating your system to the following
package version:

After a standard system update you need to reboot your computer to makeall the necessary changes.

ATTENTION: Due to an unavoidable ABI change the kernel updates havebeen given a new version number, which requires you to recompile andreinstall all third party kernel modules you might have installed.Unless you manually uninstalled the standard kernel metapackages(e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual,linux-powerpc), a standard system upgrade will automatically performthis as well.